E.g. the following comparisons evaluate to true but shouldn't:
120 < -2147483647; // true 1 < -2147483647; // true 2147483647 < -1; // true // etc
Conversely, the following evaluate to false:
120 > -2147483647; // false 1 > -2147483647; // false 2147483647 > -1; // false // etc
Print("Integer comparison testing START");
int start = 1;
for (int f = start; true; f++)
{
if (f > -2147483647)
{
Print(f.ToString() + " > -2147483647");
break;
}
if (f == 2147483647)
break;
}
Print("Integer comparison testing END");
Print(f);Will never hit the condition where f is bigger than -2147483647, despite f starting positive and growing (note that the loop does finish fine, just takes a while).
Once the compared number reaches int.MIN + <other number> + 1 (for greater than comparison) or int.MAX - <other number> (for lesser than comparison), the comparison starts to give correct results again.
E.g.:
10 > int.MIN; // false, incorrect result 10 > int.MIN + 10; // false, incorrect result 10 > int.MIN + 11; // true, correct result -10 < int.MAX; // false, incorrect result -10 < int.MAX - 10; // true, correct result
@lava76 Maybe you should take a look on this: https://community.bistudio.com/wiki/Arma_Reforger:Scripting:_Values (Primitive Types part)
The scripting language is the same than dayz
I don't remeber where in the documentation, it says when limit is reach it behave like this:
2147483648 +1 = -2147483648
(No infinite numbers possible because no infinite computing possible).
The problem is not infinite recursion.
The problem is that 1 < -2147483647 should NOT evaluate to true, ever (or any other positive non-zero number that's in-range for a 32-bit int).
I wouldn't be surprised if the underlying problem has very wide spread consequences that would explain a lot of oddities I've been seeing in integer math in Enforce
Work-around for comparison:
//! @brief Compares two numbers
//! Returns 1 if a > b, zero if a == b and -1 if a < b
static int Cmp(int a, int b)
{
if (a == b)
{
return 0;
}
else if ((a >= 0 && b >= 0) || (a < 0 && b < 0))
{
if (a > b)
return 1;
else
return -1;
}
else if (a < 0 && b >= 0)
{
return -1;
}
return 1;
}(Edit: simpler version of the above, just convert to float for the comparison)
//! @brief Compares two numbers
//! Returns 1 if a > b, zero if a == b and -1 if a < b
static int Cmp(int a, int b)
{
if (a == b)
return 0;
float af = a, bf = b;
if (af > bf)
return 1;
return -1;
}